Open AccessUterine Activity and Placental Histology in Abortion at Mid‐Trimester by Rivanol and Catheter
Author(s) -
Manabe Y.,
Manabe A.,
Yoshida Y.
Publication year - 1982
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016348209156586
Subject(s) - medicine , contractility , uterus , pregnancy , abortion , uterine contraction , placenta , fetus , catheter , gynecology , obstetrics , myometrium , histology , andrology , surgery , biology , genetics
. Artificial abortions were performed on 7 patients during mid‐pregnancy by intra‐uterine instillation of 0.1% rivanol and catheters. The changes in uterine contractility during the treatment were monitored continuously by intra‐amniotic pressure recording. Uterine activity developed a gradual but steady increase and abortion was completed within 22 to 47 hours. A significant increase in uterine contractility started after a lag of several hours. Neither hyper‐tonus nor hyperactivity was noted during the treatment. The fetus was delivered unaffected in all cases. The placentas delivered showed normal histological integrity, and an autora‐diographic study established the viability of trophoblasts. These results suggest that the abortive effect of rivanol and catheter on the uterus and placenta is different from that induced by other chemicals.